发明名称 |
PROCESS FOR PRODUCING AN ETHYLENE COPOLYMER |
摘要 |
A process for producing an ethylene copolymer having a density of from 0.900 to 0.945 g/cm3 by copolymerizing in two steps a predominant amount of ethylene with a minor amount of an alpha-olefin containing at least 3 carbon atoms at room temperature to not more than about 100 DEG C. under a pressure of about 1 to about 100 kg/cm2 in the presence of a catalyst composed of (A) a titanium catalyst component supported on a magnesium compound and (B) an organoaluminum compound; characterized in that said copolymerization is carried out in (i) a first step where about 0.01 to about 50 g, per gram of the titanium catalyst component (A), of the alpha-olefin containing at least 3 carbon atoms is polymerized, said catalyst further comprising an organic acid ester (C), and then (ii) a second step where the final product of ethylene copolymer is formed in an amount more than about 100 times the weight of the polymer formed in the first step. |
申请公布号 |
DE2965167(D1) |
申请公布日期 |
1983.05.11 |
申请号 |
DE19792965167 |
申请日期 |
1979.12.28 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
MORITA, YOSHINORI;TOYOTA, AKINORI;KASHIWA, NORIO |
分类号 |
C08F2/00;C08F2/04;C08F2/06;C08F4/00;C08F4/60;C08F4/64;C08F210/00;C08F210/16;C08F297/08;(IPC1-7):C08F210/16 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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